Product Name: Environmental friendly air conditioner RTF-20A (bottom air outlet) Product Features: The air is supplied indoors through a fan, and the outdoor air flows through a wet curtain soaked in water. The air fully contacts with moisture and absorbs sensible heat from the air, thereby achieving the purpose of cooling, ventilation, dust removal, and increasing fresh air. Suitable locations: factory workshops, canteens, dormitories, storage centers, shopping malls, internet cafes, schools, gyms, car dealerships, stations, outdoor activity areas, and animal husbandry.